{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "977881607",
    "entityType": "User",
    "nonce": "0x379ce43d26f65fa8582395d92e386e7ad56013bca8e3b695a55049f01ed0dc1f",
    "signature": "0x5ae3ef26bc54ad6dfa4c73c5f563192e421b9dbaea1951ec51a94e5f5bb2ec4b4f4551f9edf4a0b834917ba8bb729d47a55b47ce374dfe1d7013cc14df3c00ab1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}