{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "576652170",
    "entityType": "User",
    "nonce": "0x948543f2f77403bf63c3d24597d8eeea10e2fbea58bb5c09751c71352e083998",
    "signature": "0xe88fa2c0c6b01c4a61c5ac030bbefe01e4f04d3e830bdf2c3012d1a7ae66349041202724f174e3ced2f3d5ab43ea3fbdf61322f2204d14cdc0d2fe03e4dfb80e1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}