{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4107ccf0d800594987af029bafa384d277ccce509cdb5525ea45d62991725426",
    "signature": "0xc0ce7af5e377099a4bc91c7f031a7ab242989b1ea2ea72283c7527b3dd91510e1486051098f40f81abdbee6727e4a5ed8f2b99ddc9272cfb04ee8ca9288425851b",
    "signer": "0x4ad870a0C318214b4796d1464BC8Dc57C6b84C12",
    "userId": "408505072"
  }
}