{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb51828b9a11e426bb122b45aabf8f42db278ed7472d4f2be60541337a418ad83",
    "signature": "0xaee522e6db0dd3324475a476780d322d3f55fb8d203906f03938480b28a2db0b06164980d977650d1a7408ba94a88923862b14e8585f68e03ea769b90b36e9271b",
    "signer": "0x506D1A99b35078CA243259926EA2D2D705Fa0312",
    "userId": "378129042"
  }
}