{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "296574",
    "entityType": "User",
    "nonce": "0x78264e81e8859baee3f9365a78ce834fa2bc9ef35e8137e10277179b160c6a13",
    "signature": "0x761ff030f20985afb2fb8818c2c4f664acfb308bbd32ba387f993cfc3340278821440a345199ac3708dfc97e837389ef9a7bb0b46d4ddef07f5b6fb67c620ef01b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}