{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "371065",
    "entityType": "User",
    "nonce": "0x7fc578b668d021ea4a29367d2b113db2e1201c0a266dfe562b8c359a66b575b4",
    "signature": "0x05a49c99a31671fcb4008515f5facceaa3167a7d802187c31282129605431c8311e228a091b85f43475b6c36fb940cb21f68cc5d88d26236af418ea3a6e3f8f81c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}