{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd49ef00f344d8be9762c8506562654cabeee27f0cb8883da5581c3f50b62dd5e",
    "signature": "0xe4821e49fa365c9fc51e8677485c4ae9d9bb850272272a6ad4b59aaf8b5f126f3fb1e18f7fab428eac01e3ff4dba9b4867074c761d82690d0e8e1bdfa04115ab1b",
    "signer": "0x0685dE64d6C1DD2F4492DE8d4D836Bde25c77910",
    "userId": "392433914"
  }
}