{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1780850",
    "entityType": "User",
    "nonce": "0x5287e2e5ef9f3e59fd035e2d4aa212aaf7f59ff7d0df7576723846fcbcb5508b",
    "signature": "0xf8d89c2b98ebfe3510be3ed07edd549087711478036e67a6d0d99fcf8a39fff37745dcfcf10151993747c9a00dc47a4b9fa1477cb1a266f5840b9c22803a88f31c",
    "signer": "0x5E1b23614a9da638dba09e8aB2E9B76ed81c688f",
    "userId": "306948669"
  }
}