{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc7b7f2fb567d94f18391758131a2b206c0b31363efa20830515423f648f7864b",
    "signature": "0x9ba4aacd5d71c741ae28467bdd691715d08cbde3efa05d2d40d9bc03e29faa836a5edf5a6d0dcfe0f07f65c3ca95b12ae094c2738b19f882c2deb3f35e0fdbb91c",
    "signer": "0xDe6128EEdBB4d15D391871267E286E878C7011B6",
    "userId": "144906061"
  }
}