{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xcd46f23af851f29502565dae8251a0717e8d8045adcd739a0124c8781ba2fe0b",
    "signature": "0x449621a1010d7244f7a8e452491f47ece57ae9e7cb80adabe8af17da970a62ff7fa6c506661293120e0e3a850b4cb4ee50881eb1bb0db7ed848b37c772e053fa1b",
    "signer": "0xd8a65dC2d71D6caDA0ef13A84908F90052c425DA",
    "userId": "837557269"
  }
}