{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3f4088804ae25dbc757fddf36a3a4f6e54c17e19c6888d93d2fc9581d87db7a0",
    "signature": "0xfda656252e38a0699c34a1ebb64f1b801c5ae09337ff94ed7dd512be5cb7faec258a91a30da0372edcb39e8f1f13ed41812078a07ac5f5929c1e13d31e123fd41c",
    "signer": "0xE6B5777D1Cda6098756958CaF7bE04Bbfaa01F3E",
    "userId": "37158"
  }
}