{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbd45a14d843ea756fc88841eb99434f4784de713a5d9d4959dcecbb85e1fac04",
    "signature": "0xe34c2e9d52be527fdff745241f0ba4e4f8b6c01ebbfc903dd32992b7468cfce64747738ee30999944be8a122d0000f362c5b58e55430ebb97cc2a70c0d05ea2b1b",
    "signer": "0xA951b37C0DC3D477f4C2A1Edb7CC8bC3CC7dCaB5",
    "userId": "347626506"
  }
}