{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "481785860",
    "entityType": "User",
    "nonce": "0x94a0073dd9db814d4c6858d4ebbe78d4d0165d30630de31d9b85042f7eb63494",
    "signature": "0xf1a9e5e8e36bda590b1dbcb0fd20fea7e1408589f3906b675e4a644585e15f4767be7e67d70d6852c94e8508e4f4fc5a3195e5a69da7a2254ffdedafef68b9e11b",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}