{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144959",
    "entityType": "User",
    "nonce": "0xf9e64263d520d15ea5244ce5714ffa8097d2124ad66389ea7ac0e7a5147b790e",
    "signature": "0x8d73ef515aa6605abc61599357c3a3d64b196b1a3ec46ae0464a9644d7a248bc7c738d9ac452508b4bf6038700a5a1baaadc47fa6a04b7a90afa3fad751aba081c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}