{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc69075c05e049ecdde67c882f9fd85ab632b288b08a550e7ec249609a2ee957b",
    "signature": "0x297656039fbbbca70d886d89a963cc28c5a91d0467f0467d340c8658a2e751645eb4507043b37f6078c107d055f39e064b7c23cdc36a8be80b65ce1b9dd3b7c01b",
    "signer": "0xdA4448A94942BB1d74B134dAe4e71F0A65E8a180",
    "userId": "669480134"
  }
}