{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15317",
    "entityType": "User",
    "nonce": "0x25274b0d3abcc40b61aff11d5cd7ddbcc789d86fd1e1a6008497af4c410aecb5",
    "signature": "0xf18702f5723ef8eeb6e40c280c38493d60a0ae9d8c4da52e08c2f89ac39ce9a9316de3b66c7eec86a62b1f915e155b41fd09d38fc50271ce5cde7a9b18b7dcfe1c",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}