{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "766293353",
    "entityType": "User",
    "nonce": "0xf0a4cae21ae159cdd4697c03cdb079cc8a71ba79684472c340ed6477c5fd171b",
    "signature": "0x0964b3748784dbec486409c787866a53639f0339259fcc5844f55af420d6d8322b3a12db893dd471ed4f77f847b505f77fc8a790b8c4ed3511c6643368f1f8f91c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}