{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x77496268c39bdc4c610e2858c5a7ff6770376acd3d41d846cc360ed696d4d64b",
    "signature": "0xa1a945add7168143533c7df6fdca2e9ac452972bde568d2d98f5b2d4313fcd0d1c3f9770f2806834e80292125a902c734abe405b2c7bfd3fbc82deaddb996b251c",
    "signer": "0xcf135AbEA8b552C3D6DcfC900D43C34507048Eea",
    "userId": "455252061"
  }
}