{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "897300107",
    "entityType": "User",
    "nonce": "0x22d0cae0b64f599f41c046ccef5323045024128dda545d0ba29b72f99631f02e",
    "signature": "0x928222d2c0b414c73950f1bca2524e2b40770e442fc432507464b6c355f9acf458999dc43585e2a8a3793f7d24c6e008afd2fb9ba708acbc2fe1d882b7cd66ba1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}