{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64200876",
    "entityType": "User",
    "nonce": "0x14dd55adb36829e7013a46b98f45e3b95656a73deaf3b0b9b063effc9080374e",
    "signature": "0xe8331792f1e710aa6fa1155845e8604b48d983a48bce4095e6d931961f1885105ab4357221fe89672fdf554cab34cce3a033851401603cee98f1ba79a5d43cf61c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}