{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "556",
    "entityType": "User",
    "nonce": "0x72ccfd662fdd1607a235d2baddb6e3a4fad8bd1546944e69af63d74d5c10ac1a",
    "signature": "0x7fdf47507afde666dc2e62c2929a74820656e02021420e2b46137a32231d4b0677dc9fbfdf6efb9d9397062dc5e7315ddc03399d50c5558501d905e783e322381c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}