{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "61921",
    "entityType": "User",
    "nonce": "0x619eff983052ac1c0981f686d2cb939fe53f41ad22d8339b0e9a141f16769500",
    "signature": "0xa7177db6622fa52ae2d6643501ba84f5606329aa5897a5ad8ca52108246137c405fd3a601a9013a9e68e2e6ab504be86a26f6310577c8b196a8b6f61538e07f61b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}