{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "83603",
    "entityType": "User",
    "nonce": "0x2f9b3b83074088287848ef320269978add13ab0824a5a9c863f6cb3358ea1053",
    "signature": "0xef1583feb003f6be9012827a60c44392a11ba5d2d72edb12507eb4e97fc035cc646f17b04053c25c8583ca1b79cce69bbbc4b692c3d9bd34b218cec891522c331b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}