{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55290787",
    "entityType": "User",
    "nonce": "0xb890a58e1836f9b6ebffb03f99a56aca4bf6b40f50cab922013538745eba169b",
    "signature": "0x677966f2a484392cdacbe305420f500c4b802a6e000332cd5b645bb1798b68e23a4f06c113d358bbf7ffeeb0a99d515a4e2d6b6f0ea22014e600e23d544f43b21b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}