{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x007ccccfc555da0fa62c2286268180d530144b7dfb17a5aced2218dc735f2479",
    "signature": "0xf67e68e8ce737133d0e1caa3d1f66ed4820de0e14bc800a16ebe38096bf4991f775139ad9e83d85d5f79a1f67d3613449f008d1eab66d4b6828d064b90c98c5a1b",
    "signer": "0x03Bd0a309890467dba8fFDBb7156C13F50F278F7",
    "userId": "377603534"
  }
}