{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "383103",
    "entityType": "User",
    "nonce": "0xf77e77bba1aa5d1160e8b6cb664896fc7c4d05cdba7ea1a7054b3e779031b5b7",
    "signature": "0x80459a77ac8c21fceccdfe70d7a51d0efe49b510ab63b3d7bbc61d2f37c6005c4f35720c0939db1eca679546fbf64a9ece79a78dee2764b776dc5c83403fa30e1b",
    "signer": "0xc6Ad7F06811d6A88C31184481367Ea3716C9EDeF",
    "userId": "600661494"
  }
}