{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "25895518",
    "entityType": "User",
    "nonce": "0x87c37864336b94586fa4369eb5785671ffebbb421003a4b27122f3e28ff0426e",
    "signature": "0x42ced671b8ede6ac011e2fb0e653216e2653f975dd0d96b430ab1035790012c81e124f5488cf584420919f62961e9e3b1153be85ed90d664034bb20b21ab5b981b",
    "signer": "0x7FCffbc9FB7516A6453F59c5b9918Ea8A7EB33eb",
    "userId": "502388335"
  }
}