{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "180303",
    "entityType": "User",
    "nonce": "0x00412c167ed52353bcf639d8c8707d39e6d567373155a2f8d877b304423ad18c",
    "signature": "0x4d4fb23382d48a22c78080c175fd5e2ae2f38109af6c11ee27b2fdb278813ce87bb2964f9824b6cee0e3f90845939f00b2a129b5d970d1d75e2b455bfdc594511c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}