{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304263",
    "entityType": "User",
    "nonce": "0xf8ab62009a357037222c3f3883f6ff2a7e89f39485e1baac832e78766b454f43",
    "signature": "0x14be69267fa0e0d022055904410e38b596257c3a002f9098921ab229491be3ed29c4d3e640eb92d2a5d249e56a21da2eae55976ad0c154bb86b9e9c7d3783ecb1c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}