{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "984215347",
    "entityType": "User",
    "nonce": "0x12afdc6f405623c8f687afd5ad2c76262cabf3f660e1a7d86f4266df1e02f3c1",
    "signature": "0x2f943c9b502f8e0f0035a539089bfe216f79f6be443d88f3cab81503ca264e9224c1203ec3271cfc4d783b748fde2d9b1d77f567d287896c35a1043ed81c8ea81c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}