{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6026b5f57715be95b0d7da0af9631226576627063e02354852fdd04c50da9dd9",
    "signature": "0x4a42d5f3c7863b51426c107a8d56a4f14b608eceb28e4aa79f1e9197fa0bd7133f0aeacad116c70dea821203af29604c1c651947cb36978a35959678f9dfbd381b",
    "signer": "0xEC9099Ebf4e6B90938db6daD3c92A75e6D1a9aE8",
    "userId": "548806327"
  }
}