{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "963075181",
    "entityType": "User",
    "nonce": "0xf559c2d9a7a8ce276a04972d5f268632a000580c2ff0702c1ca49b1b24071954",
    "signature": "0x305cc7a76d3c96f158cbdb4a54475c5ffcd6bec37e450a000b6e4df062caffdc62e592597125c12dda67909dfb3dd3831ba4ad2d1d997acb11cbfab1ca2ee51f1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}