{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "648557513",
    "entityType": "User",
    "nonce": "0xc0e5ef258e7bb323bf60b3ce80d405f7251dd7df91b5d229cf710657794fd997",
    "signature": "0x1c0ea53a141fb873eb8119dacad8ebcb2c29fe257ffb9a4c09ae591fd3606f741a3c8cbb4dbcd45ecab0b8b22152df805d6bdd5943d271243e9e7f54374ae1941b",
    "signer": "0x48997477d821e30d3Fa835d1Ee7809B3253Cb100",
    "userId": "75085"
  }
}