{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508076300",
    "entityType": "User",
    "nonce": "0x0385c47446ca0c10979d26cabb45ece540950a915e0a055eb924267cb481e5d4",
    "signature": "0x7fa768807dcf9e05d106427b0e521b25eb7a436b861447775dfbbea4525a8687194150787c4d1156e2983835213852a27dd8105903e1bb6bc4879105a6ee5bad1c",
    "signer": "0x80005E1c5cb88Fd03a994eC8a06eFD4c801102D7",
    "userId": "225974748"
  }
}