{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "964899801",
    "entityType": "User",
    "nonce": "0x89a26e21200a1bcdd12eb99a8d5db3251f86fd01726771f480d26d06ce576dff",
    "signature": "0xb121505063ab25d0fcbd7ef362bc34f5cf59f3cbb5d0c77c4929d0de21983ed02eabcd0da971d47685d7e2845fb81abb16d99a7dcff59007ef0ee3b3ddeb64701c",
    "signer": "0xE0EaB915C3153F4a2DF5C6e7b8D58dAc829Fbf2f",
    "userId": "774741623"
  }
}