{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7872e32df9f44a37a51943bc8b64061f55277a0c223289a70bc29c5678a11bf4",
    "signature": "0x1527f432e7b841e589db9711820b9f7d870d26a1b344d98f66bc65b9f9903fd428d344141a135cf1d1a1b7b449b2cb934433d240ca8823a0b00477056c3073911c",
    "signer": "0xF4Be1e780c06BcF21b6815839CabF01B0c0e7606",
    "userId": "684451248"
  }
}