{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508076300",
    "entityType": "User",
    "nonce": "0x4d8f3e0c95c6694aba068eb20545c9d0e8a0c193f02fdd5797862094a61d1a1b",
    "signature": "0xdb5fda523c6eeb03897e481438abe2623d8eb213c2b55da59f455f13b0f38383715397e9bfd685c61164f9ee991fe544cab7680f2a1ecd626c60af489334c5511c",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}