{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "894327847",
    "entityType": "User",
    "nonce": "0xe5426560c818f51317a2bb76f971f08de4410dbf841cd5d8d61f4b40379e0f41",
    "signature": "0xda33453a6c012f5d6d470a9861df71d0746c4b3cab5bf5286f0a078ee5ccee141e5871fbf5c04832ec68b311c176753825abe1149fc5da1f5d71ba9cda883af81b",
    "signer": "0x4ad870a0C318214b4796d1464BC8Dc57C6b84C12",
    "userId": "408505072"
  }
}