{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0x147595e0752a4ce2d4c2c5bfc0f6a0897c300914ee606dfa062584239c6f76ab",
    "signature": "0x538452eab6f6753c16daccb5aceca79eb894349e89f6f390284d2a7af5b276002b5bd6330cee1be47892829d559fa8d6f0010f2870b54be977be80302ab8d9d61b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}