{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3c2675c210890494d0251312fdeea61ce2d63e08759525cf72d7a232013a8582",
    "signature": "0x2ba53bec550c3dd3b898f9b74bee103e4498c1f01f5be83c9db368e31b0fe6781fb2e31aac6f5bc4926272be99d9b6fa0271abb77c955e4ff2f07f5eceaacbb01c",
    "signer": "0xC7d89eDB8DD13382b9e1d8dc498D14a29AA4cB1d",
    "userId": "778912025"
  }
}