{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "140310",
    "entityType": "User",
    "nonce": "0x7fd25a080cf3e7f01ef00ed345a3277eb3392c69f3ccf7e39443f1a4ef777c8b",
    "signature": "0x75c54f76d9764ff301a38b6b571fe3338f05d556d3c24b32b47591c252ee897748e29e72b0e7cf2ffc09174520538664461204c64c82274030838e4b24cb22451b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}