{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1502939",
    "entityType": "User",
    "nonce": "0xa782b3e6670a283528644debe7b63f9056546cbf2790c313446b515781b59436",
    "signature": "0x054fa3a272ef2f25dc641bc55c0770f4d6181fb3a09c8d983df34e2f3ecee94873ce35c8a5bdbde9fc46b7612b32f0da33efa42771f4a160a5629ed9bd57dc421c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}