{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12374",
    "entityType": "User",
    "nonce": "0x8bf8809bd386af6a3f836980a4c228a8561dbf7ba2e5b2d3271a7f74b4dfac6e",
    "signature": "0x655461dbf2bd9782370d9a33ef3a361ec740a7a719048efd7f9ace2609b1cea8578e7d05a0b7261236bb49dfe11deb8508e3849a649e4bd31f24196b134a8bef1c",
    "signer": "0xbAddc7a59cC8A05c8c6b0Dc8B3621B082f8C98bd",
    "userId": "562834680"
  }
}