{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "425574",
    "entityType": "User",
    "nonce": "0x3ee8b06e36a3a1bff7a1dc36898d78d0ce6801eedc108f935f72d0f6e98f609d",
    "signature": "0x51b62f579605ab288938c018757725527b2121509ae4e0d8f95911b2294271ac596be28e709fdbfc1add5a736e277cdca3f52e8a7a36082d57e53c530b5e9faf1c",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}