{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325624",
    "entityType": "User",
    "nonce": "0x0b752ccab3defb3aade5e637100bcb969009f89a902e052af5ea4f7eba272269",
    "signature": "0x51674e0f5f1dcc1236b7462117fdf9d7eea7af427754eac84056179966098b6e76cece7ae5232568c36924b5be74a69a24d1755b9dc26af623a3b2be3bdce8c81c",
    "signer": "0x07024945569e5721E4d506B01fB850443CF99F65",
    "userId": "871280797"
  }
}