{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5218",
    "entityType": "User",
    "nonce": "0x35f1526c22b6b82b1981f3912de18a2ee40c0b9e9f6dc90e5d3e9d0258de76e8",
    "signature": "0x7fb74f39dbb86d8c7e3ee0db8dcf06b09466706e9cf3c221a508019e8f219c66003aa1458cbd8e8ed64666bfdb5e78e79c0f41aab23138f2084e22754913c7051b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}