{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1112",
    "entityType": "User",
    "nonce": "0x90c59a85a8559a1d465acbb816ba58fbf2778308f26c5bcfd18ef84effcba941",
    "signature": "0x436c34178e3016d965e9d1d206fa7707344fd02b5737e060009c058120ecfe0b7ca972f38e849d4085db716e07081b2b84bfddbfff9252d14496cf10d4b4ef731c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}