{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "218904",
    "entityType": "User",
    "nonce": "0x7ba72b1fdba9f53ea7529f0b024f64533963407a266cb8aa7629b5cdc65af86c",
    "signature": "0x300801cf0454526d15b1bb9922470c755c21b1b4a48e7e628615b15db64bf50c6eaf64c9a0bc1a87667cb742d83b96a03ea26a422f080389bb8d2b6942a7ebf91b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}