{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "214528491",
    "entityType": "User",
    "nonce": "0x3e20d12fdfb8263eeb46da34ceac0c64b904c61c715f07556a610e296fd69921",
    "signature": "0x32661c3e521a8722d02245ff804e2b77cba6eb3657d7f49f6cb55a63867e9ddf282764e910a76487ae914eb06b8e32a49b39c24b28b7cebb8a5724c62a2aba511b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}