{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5149",
    "entityType": "User",
    "nonce": "0x3887591918aa56e0defdea7ae24db484e52eb301418adcf0351a080a91fd1cf2",
    "signature": "0xe504fe7256af71ccfb6a3b83d5a3aa50eed77f478d074103c04e604d29cff34d2ad9decbe5073a016197ebe450073f2f214c2ecd21fdb46e710b2126dbee94171b",
    "signer": "0xA58E9DB71bd7769eD0ce2E3B8570c246C1157776",
    "userId": "636373789"
  }
}