{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "999692142",
    "entityType": "User",
    "nonce": "0x690ad82d50ebacefafdb5e54d0f35c69458b9a8afd7fb268442d8436d8c0f038",
    "signature": "0x78a78dd06b38e40db14b8e0ac7a931b61d71b0e44b49b65a80fb42a7b5cdf95668de0fb4365638f0e6327f3171dd0bbe042f57119582b1cdbdb82f61af21ef9a1b",
    "signer": "0xF6F9F433Ab5dDe3c96D63C2fFAa64b610599a410",
    "userId": "80682"
  }
}