{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "49853",
    "entityType": "User",
    "nonce": "0x7c716aa0d48fe122b60703ea82d4925ed6077da2e7d01095724c4c144e31cd82",
    "signature": "0x8a01a9b9f244d892bf693475bc0c175fc65925fbc7fec575706fed63ab955e4971d18f144902259f3980fd551a2fd98fa30297b4b39473e9d2e1282076da16561c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}