{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154535356",
    "entityType": "User",
    "nonce": "0xc4a99ae55c43d0136f899c93fac36634d51270a50abe443b24cf2653f7e3b132",
    "signature": "0xa7585d171dd23332a8af36aa36d7303fab52a03b9737bb48206ce24447f5be9f421e598d43e8f72fa479ce4dafe0474a2807c0d48855c6c8937ba2e4df7398e41b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}