{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xab75b3cc2c34bc36669a17a5842a72258efe31bafe95a23256090ade3a7f14c7",
    "signature": "0xa64cc9cdb4392a30a164eb7b179ad0843ea3540549e9bf704744a8670f4a18d1321f42992684cb7252c255c2f6a12f9860bb17482ff9800d917d1d4d12c804391c",
    "signer": "0x5501467AFaA7897fBBD65dE583c7E74577B92f74",
    "userId": "608591950"
  }
}