{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "278325",
    "entityType": "User",
    "nonce": "0xca6b0a3f17456b52c74b6618402bb00a589f358f2031f4b311326f92c012abfe",
    "signature": "0x94ae18e3045928e0f6d5be37335cd14332d1f58d39bba5bd72769eb3747f66e82ac1c1cdd424e96a619a115c5b286f3f12eac1a0a82bef3b70f6cf19817b2e1e1c",
    "signer": "0x3DdfB99173Ed7ff3A083C9C589582B230d37906E",
    "userId": "192527938"
  }
}