{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x678f80bf3a50da301163c397fb609abb54cb281fe8c73f2226a579a054edd4bd",
    "signature": "0xe10e3c34d7f045f76b2a58de547705ea01ac6030ab98b4830d2101e49d2e23d7179321daf2ed0067e3413fc950dfd1c023055ec24bf962932fdea04cb64451221c",
    "signer": "0xb84B29d012828737440a5588dCd931a73C09765B",
    "userId": "257837133"
  }
}